Application of Design Speed for Urban Road and Street Network

Ziedonis Lazda, Juris Smirnovs


Building of arterials in densely populated urban areas needs significant financial expenses. In the situation when the available financial resources for street and bridge construction are limited, the most important issue is to evaluate all possible ways to reduce the total road construction costs what is first of all achieved by reducing geometrical parameters of arterials. These parameters are reduced by changing the design speed, while ensuring an adequate level of traffic safety. Therefore there is a need for a review of standards for the street functions and categories of streets in urban areas. An analysis of average momentary speed impact on urban street and road network design, as well as momentary speed impact on traffic conditions has been done. A relationship between design speed and momentary speed at different capacity ratio of traffic flow has been found.


design speed; local speed; momentary speed; traffic flow density; level of traffic load

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Anas, A.; Hiramatsu, T. 2012. The Effect of the Price of Gasoline on the Urban Economy: from Route Choice to General Equilibrium, Transportation Research Part A: Policy and Practice 46(6): 855−873.

Archer, J.; Fotheringham, N.; Symmons, M.; Corben B. 2008. The Impact of Lowered Speed Limits in Urban and Metropolitan Areas. Report No. 276, Monash University Accident Research Centre. 71 p.

Brilon, W. 2010. Zuverlassigkeit statt Schnelligkeit [Reliability Rather than Speed]. Strassenverkehrstechnik No. 5

Brilon, W. 1993. Ausgewählte Kapitel aus der Theorie des Verkehrsflusses. [Selected Chapters from the Theory of Traffic Flow]. Ruhr Universität Bochum. Ruhr.

Camacho-Torregrosa, F. J.; Pérez-Zuriaga, A. M.; J. Campoy-Ungría, J. M.; García-García, A. 2013. New Geometric Design Consistency Model Based on Operating Speed Profiles for Road Safety Evaluation, Accident Analysis and Prevention 61: 33−42.

Castro, M.; Pardillo-Mayora, J. M.; Jurado R. 2013. Development of a Local Operating Speed Model for Consistency Analysis Integrating Laser, GPS and GIS for Measuring Vehicles Speed, The Baltic Journal of Road and Bridge Engineering 8(4): 281−288.

De Luca, M.; Lamberti, R.; Dell’Acqua, G. 2012. Freeway Free Flow Speed: a Case Study in Italy, Procedia − Social and Behavioral Sciences 54(4): 628−636.

Dhamaniya, A.; Chandra, S. 2013. Speed Prediction Models for Urban Arterials under Mixed Traffic Conditions, Procedia − Social and Behavioral Sciences 104(2): 342–351.

Duret, A.; Ahn, S.; Buisson, C. 2012. Lane Flow Distribution on a Three-Lane Freeway: General Features and the Effects of Traffic Controls, Transportation Research Part C: Emerging Technologies 24: 157–167.

Eluru, N.; Chakour, V.; Chamberlain, M.; Miranda-Moreno, L. F. 2013. Modeling Vehicle Operating Speed on Urban Roads in Montreal: a Panel Mixed Ordered Probit Fractional Split Model, Accident Analysis and Prevention 59: 125–134.

He, N.; Zhao, S. 2013. Discussion on Influencing Factors of Freeflow Travel Time in Road Traffic Impedance Function, Procedia – Social and Behavioral Sciences 96(6): 90–97.

Islam, M. T.; El-Basyouny, K.; Ibrahim, S. E. 2014. The Impact of Lowered Residential Speed Limits on Vehicle Speed Behavior, Safety Science 62: 483‒494.

Lazda, Z.; Smirnovs, J. 2011. Impact of Permitted Driving Speed on the Design of Urban Street Network in Latvia, The Baltic Journal of Road and Bridge Engineering 6(4): 283–288.

Lazda, Z.; Smirnovs, J. 2009. Evaluation of Road Traffic Safety Level in the State Main Road Network of Latvia, The Baltic Journal of Road and Bridge Engineering 4(4): 156–160.

Matírnez, A.; Mántaras, D. A.; Luque, P. 2013. Reducing Posted Speed and Perceptual Countermeasures to Improve Safety in Road Stretches with a High Concentration of Accidents, Safety Science 60: 160–168.

Melo, P. C.; Graham, D. J.; Brage-Ardao, R. 2013. The Productivity of Transport Infrastructure Investment: a Meta-Analysis of Empirical Evidence, Regional Science and Urban Economics 43(5): 695–706.

Nitzsche, E.; Tscharaktschiew, S. 2013. Efficiency of Speed Limits in Cities: a Spatial Computable General Equilibrium Assessment, Transportation Research Part A: Policy and Practice 56: 23−48.

DOI: 10.3846/bjrbe.2014.04


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